Malicious PDF — malware analysis report

Static analysis result for SHA-256 61180e4c78d85592…

MALICIOUS

PDF

41.5 KB Created: 2020-08-17 06:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4cd2beb37f2586bc4277e6b7186b7664 SHA-1: 6d63bfe8ea6b63e9785a658d2bedac9f04e14543 SHA-256: 61180e4c78d85592435814eb8d1ed7745d2bd44cd6e0676ef516f208ac7e5a0f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Dungeons and dragons character sheets 3. 5' and includes the malicious URL. The ML classifier also strongly indicated maliciousness. The presence of multiple external PDF links suggests a link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=dungeons+and+dragons+character+sheets+3.+5 In PDF document text
    • http://files.caseybradleyarts.com/uploads/1/3/0/7/130775893/juliwijobaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4678/8501/files/1750243542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/lovilud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2177/7570/files/naxolipevevidejexawil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4916/4693/files/mowuzedumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1770/files/etiologia_de_evento_vascular_cerebral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/wamujakugenenudonoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1627/2547/files/japanese_chirugali_audio_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/va_form_4138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/govudinixidesixokufipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6351/9906/files/7785658958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6273/0645/files/64777223530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/doctor_who_christmas_invasion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8394/7414/files/lesozigewapujesisabo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 5488 bytes
SHA-256: 5f3d2a605446aefb3d5e763041e5e40e8abb1f6db937c5c459764b1ff7ee0be5
font_01_sfnt_off0000765d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765D 10232 bytes
SHA-256: dc328ad53b06696e6474c1c9cee9a607b42e4df92213e4d4cc14ec8f5f9c14ff

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